Fuel Injection Plunger Spare Parts Diesel Pump Plunger for Diesel Engines Truck

Precision Fit: The plunger and sleeve are machined with ultra-precision precision, resulting in extremely small clearances (micrometer level) to ensure effective sealing of high-pressure fuel and prevent leakage.
Stable Fuel Pressure: Reliable sealing is maintained even under high pressure (up to 2000 bar or more), ensuring the stability and controllability of fuel injection pressure.
Superior Materials: Typically made of high-strength alloy steel (such as chromium-molybdenum steel), with surface heat treatment (carburizing, quenching) or coating processes (such as chrome plating, nitriding), resulting in high hardness and wear resistance.
Corrosion Resistance: Surface treatment resists corrosion from sulfides and moisture in diesel fuel, adapting to harsh operating conditions.